Sharp-CDBA3000-cs-sm 维修电路原理图.pdf

No. S5044CDBA3000 CONTENTSPageSPECIFICATIONS . 2NAMES OF PARTS . 3OPERATION MANUAL . 5DISASSEMBLY. 6REMOVING AND REINSTALLING THE MAIN PARTS. 9ADJUSTMENT . 10BLOCK DIAGRAM . 13SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.16VOLTAGE . 34NOTES ON SCHEMATIC DIAGRAM . 35WAVEFORMS OF CD CIRCUIT. 36TROUBLESHOOTING (CD SECTION) . 37FUNCTION TABLE OF IC. 41FL DISPLAY.47REPLACEMENT PARTS LIST/EXPLODED VIEWMINI COMPONENT SYSTEMMODEL CD-BA3000 In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified beused.SERVICE MANUALThis document has been published to be usedfor after sales service only.The contents are subject to change without notice.SHARP CORPORATIONCD-BA3000 Mini Component System consisting ofCD-BA3000 (main unit), CP-BA3000 (speaker system).CD-BA3000RadioFans.CN 收音机爱 好者资料库CD-BA3000 2 FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFERTO THE OPERATION MANUAL.Specifications for this model are subject to change withoutprior notice.SPECIFICATIONSCD-BA3000CP-BA3000G GeneralPower source:AC 120 V, 60 HzPower consumption: 210 WDimensions:Width; 270 mm (10-5/8)Height; 330 mm (13)Depth; 332 mm (13-1/16)Weight:9.8 kg (21.5 lbs.)G Amplifier sectionOutput power:RMS; 300 W (150 W + 150 W)(10 % T.H.D)Output terminals:Speakers; 6 ohmsHeadphones; 16-50 ohms(recommended; 32 ohms)CD digital output (optical)Input terminals:Video/Auxiliary (audio signal);500 mV/47 kohmsG Compact disc player sectionType:3-disc multi-play compact disc playerSignal readout:Non-contact, 3-beam semiconductorlaser pickupD/A converter:1-bit D/A converterFrequency response: 20 - 20,000 HzDynamic range:90 dB (1 kHz)G Tuner sectionFrequency range:FM; 87.5-108 MHzAM; 530-1,720 kHzG Cassette deck sectionFrequency response: 50-14,000 Hz (Normal tape)Signal/noise ratio:55 dB (TAPE 1, playback)50 dB (TAPE 2, recording/playback)Wow and flutter:0.3 % (WRMS)Type:3-way type 20 cm (8) woofer,8 cm (3) tweeter and super tweeterMaximum inputpower:300 WRated input power:150 WImpedance:6 ohmsDimensions:Width; 250 mm (9-13/16)Height; 330 mm (13)Depth; 335 mm (13-1/4)Weight:6.1 kg (13.4 lbs.)/eachRadioFans.CN 收音机爱 好者资料库 3 CD-BA3000NAMES OF PARTSCD-BA3000APE I Front panel01. (CD) Disc Tray02. (CD) Disc Skip Button03. (CD) Disc Number Select Buttons04. (CD) Open/Close Button05. Extra Bass Indicator06. Spectrum Analyzer/Volume Level Indicator07. (CD) Disc Number Indicators08. (CD/TUNER) Memory Indicator09. (TAPE 2) Record Indicator10. (CD) Play Indicator11. (CD) Music Schedule Indicators12. (CD) More Tracks Indicator13. (CD) Pause Indicator14. (TAPE) Play Indicator15. (CD) Repeat Indicator16. Sleep Indicator17. FM Stereo Mode Indicator18. FM Stereo Indicator19. Timer Record Indicator20. Timer Play Indicator21. On/Stand-by Button22. Clock Button23. Timer/Sleep Button24. Dimmer Button25. Extra Bass/Demo Mode Button26. Equalizer Mode Selector Button27. Volume Control28. Headphone Socket29. Function Selector Buttons30. Tuning and Time Up/Down Buttons31. (CD) Track Down/Review Button(TUNER) Preset Down Button(TAPE 2) Rewind Button32. Memory/Set Button33. (CD/TAPE) Stop Button34. Timer Set Indicator35. (CD) Play/Repeat Button(TAPE) Play Button36. (TAPE 2) Record/Pause Button37. (CD) Track Up/Cue Button(TUNER) Preset Up Button(TAPE 2) Fast Forward Button38. (TAPE 1) Cassette Compartment39. (T2) Cassette CompartmentAPE CD-BA3000 4 CP-BA3000I Rear panel01. AC Power Lead02. CD Digital Output Socket03. FM/AM Loop Aerial Socket04. Video/Auxiliary (Audio Signal) Input Sockets05. Speaker Terminals11. Super Tweeter12. Tweeter13. Woofer14. Bass Reflex Ducts15. Speaker TerminalsI Remote control01. Remote Control Transmitter LEDG CD control section02. Disc Number Select Buttons03. Memory Button04. Pause Button05. Clear Button06. Track Down/Review Button07. Track Up/Cue Button08. Disc Skip Button09. Play/Repeat Button10. Stop Button11. Random ButtonG Tuner control section12. Preset Up/Down ButtonsG Tape control section13. (TAPE 1) Play Button14. (TAPE 2) Record Pause Button15. (TAPE 1/2) Stop Button16. (TAPE 2) Play Button17. (TAPE 2) Rewind Button18. (TAPE 2) Fast Forward ButtonG Common section19. Equalizer Mode Selector Button20. Function Selector Buttons21. On/Stand-by Button22. Extra Bass Button23. Volume Up/Down Buttons1834109567111213 1416 17 182021232152219CD-BA3000 5 CD-BA3000OPERATION MANUALSETTING THE CLOCKIn this example, the clock is set for the 12-hour (AM 12:00)system.1Press the ON/STAND-BY button to enter the stand-by mode.2Press the CLOCK button.3Within 5 seconds, press the MEMORY/SET button.4Press the TUNING/TIME ( or ) button to select the timedisplay mode.“AM 12:00” The 12-hour display will appear.(AM 12:00 - PM 11:59)“AM 0:00”The 12-hour display will appear.(AM 0:00 - PM 11:59)“0:00”The 24-hour display will appear.(0:00 - 23:59)G Note that this can only be set when the unit is first in-stalled or it has been reset. 5Press the MEMORY/SET button.6Press the TUNING/TIME () button to adjust the hour.G Press the TUNING/TIME () button once to ad-vance the time by 1 hour. Hold it down to advance con-tinuously.G When the 12-hour display is selected, “AM” will changeautomatically to “PM”.7Press the MEMORY/SET button.8Press the TUNING/TIME () button to adjust the min-utes.G Press the TUNING/TIME () button once to ad-vance the time by 1 minute. Hold it down to change thetime in 5 minute intervals.G The hour setting will not advance even if minutes advancefrom “59” to “00”.9Press the MEMORY/SET button.G The clock starts operating from “0” second.(Seconds are not displayed.)And then the clock display will disappear after a few sec-onds.To see the time display:Press the CLOCK button.G The time display will appear for about 5 seconds.Note:G The clock display will flash on and off at the push of theCLOCK button when the AC power supply is restored aftera power failure occurs or after the AC power lead is discon-nected.If this happens, follow the procedure below to change theclock time.To change the clock time: 1Press the CLOCK button. 2Within 5 seconds, press the MEMORY/SET button. 3Perform steps 6 - 9 above.To change the time display mode: 1Perform steps 1 - 2 in the section “RESETTING THE MI-CROCOMPUTER”. 2Perform steps 1 - 9 above.(Main unit operation) or or or or 0.2 m - 6 m(8 - 20)IRemote controlNotes concerning use:G Replace the batteries if the operating distance is reduced orif the operation becomes erratic.G Periodically clean the transmitter LED on the remote con-trol and the sensor on the main unit with a soft cloth.G Exposing the sensor on the main unit to strong light mayinterfere with operation. Change the lighting or the directionof the unit.G Keep the remote control away from moisture, excessive heat,shock, and vibrations.PREPARATION FOR USERESETTING THE MICROCOMPUTERReset the microcomputer under the following con-ditions:G To erase all of the stored memory contents (clock and timersettings, and tuner and CD presets).G If the display is not correct.G If the operation is not correct.1Press the ON/STAND-BY button to enter the stand-by mode.2Whilst pressing down the button and the X-BASS/DEMO button, hold down the ON/STAND-BY button for atleast 1 second.G “CLEAR AL” will appear.Caution:G The operation explained above will erase all data stored inmemory including clock and timer settings, and tuner andCD presets.CD-BA3000 6 1Top Cabinet1. Screw . (A1) x46-12Side Panel1. Screw . (B1) x86-1(Left/Right)3CD Player Unit/1. Turn on the power supply,6-2CD Tray Cover open the disc tray, take out the CD tray cover, and close. (Note 1)2. Screw . (C1) x13. Hook. (C2) x34. Hook. (C3) x25. Connector . (C4) x34Rear Panel with1. Screw . (D1) x76-2Fan Motor2. Connector . (D2) x15Main PWB1. Screw . (E1) x17-22. Connector . (E2) x33. Tip Wire. (E3) x14. Flat Cable . (E4) x16Power Supply PWB1. Screw . (F1) x67-32. Connector . (F2) x33. Flat Wire. (F3) x14. Holder . (F4) x27Front Panel1. Screw . (G1) x27-32. Hook. (G2) x28Volume Motor1. Knob. (H1) x17-4Assy/2. Screw . (H2) x4Volume Motor3. Connector . (H3) x14. Belt . (H4) x15. Screw . (H5) x29Switch PWB1. Screw . (J1) x27-42. Bracket . (J2) x110Display PWB/1. Screw . (K1) x57-4Headphones PWB2. Bracket . (K2) x13. Flat Cable . (K3) x111Tape Mechanism1. Open the cassette holder.7-42. Screw. (L1) x512Turntable1. Hook. (M1) x27-52. Cover . (M2) x113Disc Tray1. Turn fully the lock lever in the6-3arrow direction.2.While holding the lock lever,rotate7-1the cam gear until the cam gearrib engages with the clamp lever.3. Push the slide holder backward to7-6engage the claw with the grooveand remove it in the directionof the arrow. .(N1) x614CD Servo PWB1. Hook. (P1) x28-1(Note 2)2. Socket . (P2) x415CD Mechanism1. Hook. (Q1) x28-22. Hook. (Q2) x316Loading Motor PWB1. Hook. (R1) x58-2DISASSEMBLYCaution on DisassemblyFollow the below-mentioned notes when disassemblingthe unit and reassembling it, to keep it safe and ensureexcellent performance:1. Take cassette tape and compact disc out of the unit.2. Be sure to remove the power supply plug from the walloutlet before starting to disassemble the unit.3. Take off nylon bands or wire holders where they need tobe removed when disassembling the unit. After servicingthe unit, be sure to rearrange the leads where they werebefore disassembling.4. Take sufficient care on static electricity of integratedcircuits and other circuits when servicing.Figure 6-2Figure 6-3CD-BA3000STEPREMOVALPROCEDUREFIGUREFigure 6-1CD-BA3000Note 1: How to open the changer manually. (Fig. 6-3)1. In this state, turn fully the lock lever in the arrow direction throughthe hole on the loading chassis bottom.2. While holding the lock lever, rotate the cam gear anticlockwise until thecam gear rib engages with the clamp lever. (Fig. 7-1)3. After that, push forward the CD slide holder.Note 2:1. After removing the connector for the optical pickup from theconnector, wrap the conductive aluminium foil around the front endof the connector so as to protect the optical pickup from electro-static damage.Note 3:1. Be careful not to break the claw of the CD mechanism.2. When fining back the cam gear assembly, let it lock by frontmovement.(B1)x43x10mm(B1)x23x10mmRearPanel(B1)x23x10mmSide Panel(Right)Side Panel(Left)(A1)x23x12mm(A1)x23x12mmTop Cabinet(C3)x1(D1)x23x10mmCD PlayerUnitCD Tray CoverPull(C3) x1(C4)x3112CD ServoPWB(C1)x13x10mm(D1)x53x10mmPower SupplyPWB(D2)x1RearPanelMain PWB(C2) x2(C2) x1Lock LeverCD Player Unit(Bottom View) 7 CD-BA3000Figure 7-1Figure 7-2Figure 7-3Figure 7-4Figure 7-5Figure 7-6Clamp LeverCam Gear RibCD Player Unit(Top View)(E2)x2(E4)x1(E3)x1Main PWBPowerSupplyPWBPowerSupplyPWB(E2)x1(E1)x13x10mm(F1)x43x10mm(G1)x23x10mm(F2)x3(F3)x1(G2)x1 (F4)x1PushPowerSupplyPWBHeadphonesPWBDisplayPWB(F1)x23x6mm(G2)x1 (F4)x1PowerTransformerPWBHeadphonesPWB(K2)x1(K3)x1(H2)x43x12mm(H5)x22x5mm(H3)x1(H1)x1(H4)x1VolumeMotorAssyVolumeMotor(L1)x53x10mm(K1)x53x10mm(J1)x23x10mm(J2)x1Display PWBSwitch PWBOpenCassetteHolderTapeMechanismTurntableDisc Tray(M2) x1CD Player Unit(M1) x2132(N1) x3(N1) x3Disc TrayCD-BA3000 8 1Front Panel1. Net Frame Assy . (A1) x18-32. Caching Holder . (A2) x43. Screw . (A3) x42Tweeter1. Screw . (B1) x48-43Super Tweeter1. Screw . (C1) x28-44Woofer1. Screw . (D1) x48-4STEPREMOVALPROCEDUREFIGUREFigure 8-3Figure 8-1Figure 8-2CP-BA3000Figure 8-4(P2) x2(P1) x2(P2) x2CD ServoPWBCD PlayerChassis(Q2) x3(Q1) x1(R1) x5(Q1) x1LoadingMotorPWBCDMechanism(A3)x44x20mm(A2)x4(A1)x1(C1)x23x10mm(B1)x43x10mm(D1)x44x12mmWooferFront PanelTweeterSuperTweeter 9 CD-BA3000REMOVING AND REINSTALLING THE MAIN PARTSTAPE MECHANISM SECTIONPerform steps 1 to 7 and 11 of the disassembly method toremove the tape mechanism.How to remove the record/playback and eraseheads (TAPE 2) (See Fig. 9-1)1. When you remove the screw (A1) x 2 pcs., the recording/playback head and three-dimensional head of the erasinghead can be removed.How to remove the playback head (TAPE 1)(See Fig. 9-2)1. When you remove the screw (B1) x 2 pcs., the playbackhead.How to remove the pinch roller (TAPE 1/2)(See Fig. 9-3)1. Carefully bend the pinch roller pawl in the direction of thearrow , and remove the pinch roller (C1) x 1 pc., in thedirection of the arrow .Note:When installing the pinch roller, pay attention to the springmounting position.How to remove the belt (TAPE 2) (See Fig. 9-4)1. Remove the main belt (D1) x 1 pc., from the motor side.2. Remove the FF/REW belt (D2) x 1 pc.How to remove the belt (TAPE 1) (See Fig. 9-4)1. Remove the main belt (E1) x 1 pc., from the motor side.2. Remove the FF/REW belt (E2) x 1 pc.How to remove the motor (See Fig. 9-5)1. Remove the screws (F1) x 2 pcs., to remove the motor.Figure 9-1Figure 9-2Figure 9-3Figure 9-4Figure 9-5(A1)x22 x 9mmTAPE 2Record/PlaybackHeadErase Head(B1)x22 x 9mmTAPE 1PlaybackHeadPinch Roller(C1)x1PinchRollerPawlPullTAPE 2TAPE 1Main Belt(E1)x1TAPE 2Main Belt(D1)x1TAPE 1Main Belt(D1)x1FF/REWBelt(D2)x1FF/REWBelt(E2)x1MotorMotor(F1) x2 2.6 x 5mmMotorCD-BA3000 10 How to remove the pickup (See Fig. 10-2)1. Remove the stop washer (B1) x 1 pc., to remove the gear(B2).2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4).3. Remove the pickup.NoteAfter removing the connector for the optical pickup from theconnector wrap the conductive aluminium foil around the frontend of connector so as to protect the optical pickup fromelectrostatic damage.Figure 10-2CD MECHANISM SECTIONPerform steps 1, 2, 3, 12 and 15 of the disassembly methodto remove the CD mechanism.How to remove the loading motor(See Fig. 10-1)1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.2. Remove the drive belt (A2) x 1pc.Figure 10-1ADJUSTMENTMECHANISM SECTION Driving Force CheckTorque MeterSpecified ValuePlay: TW-2111Tape 1: Over 80 gTape 2: Over 80 g Torque CheckTorque MeterTape 2Play: TW-211130 to 80 g. cm30 to 80 g.cmFast forward: TW-223170 to 180 g.cmRewind: TW-223170 to 180 g.cmSpecified ValueTape 1SpecifiedValueAdjustingPointInstrumentConnectionTest TapeNormalMTT-111Variable3,000 SpeakerspeedResistor in30 Hzterminalmotor.(Load(MM1)resistance:6 ohms) Tape SpeedFigure 10-3(A1)x2(A1)x1Loading MotorCD PlayerChassis(A1)x2PulleyDrive Belt(A2) x1LoadingMotor(B1) x2 2.6 x6mmShaft(B2) x1Stop Washer(B3) x1Gear(B4) x1CD MechanismPickupTAPE MECHANISMTapeMotorVariable Resistor in motor 11 CD-BA3000Test StageFrequencyFrequencyDisplaySetting/AdjustingPartsInstrumentConnectionCD SECTION AM IF/RFSignal generator: 400 Hz, 30%, AM modulated*1. Input: AntennaOutput: TP302*2. Input: AntennaOutput: TP301TUNER SECTIONfL: Low-range frequencyfH: High-renge frequencyAM IF450 kHz1,720 kHzT351*1AM Band530 kHz(fL): T306*2Coverage1.1 0.1 VAM Tracking990 kHz990 kHz(fL): T303*1*1. Input: AntennaOutput: TP301*2. Input: AntennaOutput: Speaker terminal FM RFSignal generator: 1 kHz, 75 kHz dev., FM modulatedFM Band87.50 MHzT301(fL):*1Coverage1.3 V 50 mVFM RF98.00 MHz98.00 MHzL312*2(10-30 dB)Test StageInstrumentConnectionFrequencyFrequencyDisplaySetting/AdjustingPointFigure 11-1 ADJUSTMENT POINTSFigure 11-2CD ERROR CO